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If you have implemented a revenue model (either a paywall or a contributions request) with Reader Revenue Manager, you can also add a Call-To-Action (CTA) button on your pages. This button, which asks readers to either subscribe or contribute with Google, is another way to prompt readers to engage with your content. To add a CTA button, you can insert HTML into the page after you’ve already added the Reader Revenue Manager code snippet from Publisher Center.
- Include a CTA button in the
<body>tag of a page that has your CMS Sync snippet.- Make sure that the CTA button has the
swg-standard-buttonattribute set to “subscription” or “contribution.”
- Make sure that the CTA button has the
- When the
swg-basic.jslibrary loads, it finds allswg-standard-button-labeledelements to style and turns them on automatically.
In Publisher Center, you can find the code to include the CTA button under Menu 
Example usage for the Contributions button
JavaScript
<html>
<body>
<article>
... <button swg-standard-button="contribution"></button>
</article>
</body>
</html>
Example usage for the Subscriptions button
JavaScript
<html>
<body>
<article>
...
<button swg-standard-button="subscription"></button>
</article>
</body>
</html>